1. The Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo, Buffalo, New York 14260, United States
2. Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, 50370 Wroclaw, Poland
3. Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, Illinois 60208, United States
4. Theoretical Chemistry, Royal Institute of Technology, SE-100 44 Stockholm, Sweden